Electric lamp



M. CLAUSSEN ELECTRIC LAMP ct. 23,11g23. 1,471,384

Filed Aug. 23, 1921 3 Sheets-Sheet 1 //v VEN 70/? M. [ML/555M Oct. 23,1923;

- M. CLAUSSEN ELECTRIC LAMP Filed Aug. 23, 1921 a Sheets-Sheet 2 YATTYJ M. CLAUSSEN ELECTRIC LAMP Get; 23 1923. I 1,471,384

Filed Aug. 23, 1921 3 Sheets-Sheet 5 Y' jw Patented Get. 23, 1923.

EAMJM MARTIN GLAUSSEN, OF SAN FRANCISCO, CALIFORNIA ELECTRIC LAMP.

Application filed August 23, 1921.

T (6H whom it may concern Be it known that I, MARTIN GLAUSSEN, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Electric Lamps, of which the following is a specification.

My invention relates to improvements in electric lamps, and particularly to improvements over the McKay & Claussen portable electric lamp Patent No. 1,085,147.

An object of the invention is the provision of a base cap disposed over a lamp base and vertically movable relative thereto.

A further object is the provision of a spiral spring for operatively forcing said base and cap apart.

A still further object is the provision of a draw-pin and lever for forcing the base and cap together against the tension of said spring.

A still further object is the provision of novel clamping means normally concealed within the lamp base, but operatively extendihle for clamping the lamp to a support, such as a table top, chair back, or other ob- 'ect.

A still further object is the provision of a novel supporting yoke carried by the lamp base and slidable laterally outwardly therefrom for suspending the lamp upon a nail, hook, or like support.

With the foregoing and still further objects and purposes in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and. in the details of construction hereinafter described and claimed, it be ing understood that changes in the precise en'ibodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings- Figure 1 is a perspective view of an electric lamp constructed in accordance with my invention, clamped to the edge of a suport. p Figure 2 is a bottom plan view of the lamp. with portions of the central members shown in section.

Figure 3 is a median sectional elevation,

Serial No. 494,465.

with the circuit cord and the upper portion of the lamp removed. I

Figure 4 is a bottom plan View of the base cap, disassembled from its cooperating members.

Figure 5 is a vertical sectional view of the base cap. v y b Figure 6 is a bottom plan view ofthe lamp ase.

Figure 7 is a vertical sectional view of the Figure 14 is a sectional elevationon line 1414, Fig. 13, the view showing the member bottom-side up.

Figure 15 is a median sectional elevation of the lamp, showing the tension lever vertically disposed and the base cap extended above the lamp base as far as it can operatively go, and a section of the circuit cord wound around the cord drum. 7

Figure 16 is a perspective view of the tension lever.

Figure 17 is a perspective view of the draw pin sleeve.

Figure 18 is a side elevation of the draw pin.

Figure 19 is a bottom plan view of the reinforcing plate in a modified form.

Referring to the drawings in detail, throughout which like reference characters designate like parts The numeral 1 designates a lamp base, which is preferably stamped out of sheet metal and formed to provide a central upwardly projecting cord drum 2, which carries a hollow hub 3 projecting downwardly centrally into the drum and has a central Y opening 4 in its lower end.

The lower open end of the drum 2 is provided with a drum-head 5, which has a central opening 6 in vertical axial alignment with the opening at, and a pair of spaced apart downwardly. struck marginal indents 7.

Downwardly into the open upper end: of the hub 3 projects, rotatably, a hub 8 centrally formed upon the lower side of the drum plate 9 provided with a central opening 10 registering with the opening 1-, and a downwardly struck annular marginal flange 11, which is provided at one pointwith a slot 12, which projects a distance inwardly into the upper horizontal wall of the plate and is provided at its inner extremity with an arcuated upstanding lip 18.

14: designates a base cap, which comprises a circular flat top member 15 provided with a downwardly struck annular marginal flange 16, which is conoidal in form with its exterior side concaved and has at its lower margin an inwardly rolled annular reinforcing rib 17, a central vertical opening 18, a marginal opening 18', and a pair of laterally spaced apart slots 18" disposed upon opposite sides of the opening 18'.

20 is a lamp fixture supporting stirrup, which has an intermediate flattened por tion 21 seated against the lower side of the cap 14 and provided with an opening 22 registering with the opening 18, and a pair of flattened standards or arms 23 projecting upwardly through the slots 1r and provided adjacent their lower extremities with outwardly bent lips 24 firmly engaging the upper side of the cap for rigidly maintaining the standards in their upright position.

The free ends of the standards 23 have horizontal openings 25 in which is disposed a pin 26 for pivotally supporting the lower ends 27 of a lamp fixture 28. The rangement of the fixture 28 relative to the stirrup 20, being such tiat the fixture may be oscillated in a vertical plane equal to approximately 180 degrees of a circle.

Into the upper end of the base cap 1% is fitted a reinforcing plate 29, which has a section abutting against the lower side of the intermediate portion 21 of the stirrup 20 and an opposite portion provided with an upwardly struck spacing rib 30 abutting against the lower side of the base cap for offsetting the thickness of the said portion 21, a marginal opening 31 registering with the opening 18, a central opening 32 registering with the opening 18, and a depending annular fiange 33 fitted snugly against the inner wall of flange 16.

.The base cap 14- is arranged over the base 1 in such a manner that the lip 1-3 will project slidably through the openings 18 and 31, and the openings 18 and, 82 will be disposed in vertical axial alignment with the openings 4:, 6 and 10, through which,

1,471.,ese

and also through said first named openings, projects a draw pin and sleeve 35.

The lower end of the draw pin 3 1 i: i vided with an annular groove 342, while its upper end is a wl suitable head 3% is seated upon washer 86 disposed upper side of the base cap, and immedi below the head as" with a threaded 37, which is provided with nut 31? wher the draw pin is rigi y clamped to the cap 145 and r iniorc plate 29.

The portion of pin 34. llncircling the sleeve 35, with its up end pressed against the nut 37 and lower end pressed against the bottom or hub 8, is a spiral compression spring against the tension of which plates 9 and 29 are held together, by means of the pin 34'. actuated by the lever ll cooperating itlr the drum cap 5, upon which said lever presses, when it is swung into a horizontal position in one direction (see Figs. 2 and 3).

The pivoted end of the lever is and so thatwhen the lever is oscillated into a vertical position as indicated in it reduces the distance between the I pins 39 and the drum cap 5, whereby t 9, action of the spiral spring d2 forces drum plate 9, base 1 and drum ca move downwar 1 5i and reinforcing plate to slide vertically downw: r ings 18 and 31, causing a empor tion between the lower edge of adjacent the margin of the base 1.

The free or outer edge of the rib concaved upon its inner side, except for small portion thereof which is flattened upon its outer side, thereby :t'oianing a depend g base-front -14, which is provided with a pair or laterally spaced apart openings through which slidably project the side arms as of a supporting yoke 17, which arms also slidably project through the indents and into the drum 2 where their free ends are bent upwardly to form standards 46. The outer ends of the are unitarily joined together by an intermediate portion disposed exteriorly of the base-front dd.

48 designates a clamping spring having a circular portion 49 confined against the tension of itself in the concaved portion at the outer edge of the rib 43, and intermediate sections 50, adjacent the base-front 44-, doubled backwardly and rotatably clamped to the lower side of the base 1 by means of clamping lips 51 struck out of said base, and oscillating arms 52, which cross and extend parallel to each other across the body of the base with their free ends bent forwardly to form a. ,pair of laterally spaced apart clamping fingers 53.

54 is a lamp cord, embodying circuit wires 54, which cord has one end suitably connected to the lamp fixture 28, from whence it extends through the openings 18, 22 and 31, through the slot 12 and to and around the drum 2 and thence out through a notch 55 formed in the apex of the rib 43 above the base-front 44, the notch 55 being formed by pressing downwardly a portion of the walls of said rib 43.

In Figure 19 is shown a reinforcing plate differing from the one shown in Figures 8 and 9, to the extent that it is provided with an additional spacing rib 30.

To operate my improved lamp for wind ing or unwinding the cord 54, the lever 41 is swung into a vertical position as indicated in Fig. 15, thereby permitting the spring 42 to function, as hereintofore men tioned, to vertically separate the outer edge of the flange 16 from its normal position against the rib 43, and permitting the cord to be removed from the notch 55, when it may be passed around between the rib and fiange 16 the required number of times to either wind it upon or unwind it from the drum 2.

To operate the lamp for clamping it to a support, the clamping fingers 53 are drawn out from their normal position against the bottom of the base 1, against the yielding resistance oi": the twist tension of the intermediate sections 50, amplified by the resiliency of the spring in general, and are then permitted to operatively engage the opposite side of any suitable support to which it may be desired to secure the lamp, such as the edge of a table, back of a chair, bed standard, or any other suitable article, withoutregardv to the incline or position of such article.

For supporting the lamp by hanging, the supporting yoke 47 is drawn horizontally outwardly from the side of the base by sliding the arms 46 out through the openings 45 and along the indents 7 until the standards 46 engage the wall of the drum 2, when the intermediate section 47 may be hooked over nail. hook, or other suitable projection.

lVhile the stirrup 20 is rigidly secured to the base cap 14, available rotation of the lamp fixture 28 in a vertical plane about the axis of the pivot pin 26, is equal to 180 degrees, or more, of a circle.

Having described my invention what I claim and desire to secure by Letters Patent, is:

1. In an electric lamp of the character described, a lamp base having an upwardly projecting central cord drum and an upwardly struck annular marginal rib having a notch formed in its apex adapted-to receive a lamp cord operably windable upon said cord drum.

2. In an electric lamp of the character described, a lamp base having an upwardly projecting central cord drum and an up wardly struck annular marginal rib having an indentation in its apex, and a lamp cord extending slidably through said indentation and having a portion normally wound around said drum, said indentation being formed by striking downwardly a portion of said marginal rib without cutting out the metal forming same, whereby the walls of said indentation may form a slide-way for the passage therethrough of said lamp cord.

3. In an electric lamp of the character described, a clamping spring having an intermediate portion secured to the bottom side of the lamp base and having a. pair of arms extending parallel across said bottom side, the free ends of said arms operatively swingable downwardly against the tension of said spring.

4. In an electric lamp of the character described, the combination with a lamp base having a central drum upon its upper side,

the drum provided with a central clownwardly projecting recess, of a drum plate disposed over the drum and having a central hub projecting into said recess.

5. In an electric lamp of the character described, the combination with a lamp base having a cord drum disposed centrally upon its upper side, an inwardly projecting hub on the upper end of the drum, the hub open at its upper end and provided at its lower end with a central opening, of a drum plate, spring pressed against the upper end of the drum and provided with a centrally disposed hub on its lower side projecting downwardly into said first named hub and having an opening in its lower end in axial alignment with said first named central opening.

6. In an electric lamp of the character described, the combination with a lamp base having a hollow bottom, of a clamping spring concealed in said bottom and having an intermediate portion permanently secured to the walls thereof for supporting it, the ends of said spring terminating in a pair of laterally spaced apart and approximately paralleling clamping fingers, said fingers operatively swingable downwardly below said base.

7 In an electric lamp of the character described, the combination with a lamp base having a central hollow drum on its upper side, the drum open at its lower end, the base provided adjacent its margin with pal laterally spaced apart horizontal openings, of a supporting yoke having llw lllflijkllie portions horizontally slidably disposed in said openings and l ai ing its inner portions bent upwardly and en cable with the innor Wall of said drum :or l'niting the longitudinal movement of the yolle in one direction.

8. In described, the coinb'nation with 2 amp base having an annular margin conca on its inner side, of a clamping spring haring its circular body portion cured to said annular margin, intcin'iediate po tions of the spring clamped to the lower ide oi? the base, irixs upon s: J. intermediate portions, and fingers upon the free ends of the arms 9. In an electric lamp of the character described, the combination with a circular lamp base, the outer inarg n oi the base concaved on its inner side, of a clamping spring, the clamping spring having an outer circular body spring ressed into said concaved portion of the margin for securing it to the base, inter lediale portions of the spring bent inwardly and "osed against the lower side of the base, and means car ried by the base for clamping" l intermediate portions to L116 base, die free ends of 1 7 .e: 1 W11 an electric lanip o1. tne CfiilidCLE;

said inter-anodirto port 0611b to rorin arms swingable downwardl 1st the tension of the spdng the free en vided with cnnping lingers.

10. In an electric lamp of the character described, the combination with a lamp base having an annu ar downwardly projecting wall at its margin, the lower extremity of said wall concaved, of a clamping spring having a circular body ortion pressed into said connity oi the wall, disposed inside and in the same ds of said exten- 1-3 SIDES PIO- i c t ower side of the base. 1].. In an electric lamp of the character ed, the combination with lamp base portions of its upper wall apertured 1 lips having sheir free enos project- 7 oelow said wall, of a clamping spring disposed inside the base and secured 'to the lower side of said wall by means of said lies, oppositely disposed inner terminals of the spring operatively swingable downwardly in a vertical olane the tension of the nds of said terminals conspring, the 1" es verging along "the line of an are when said terminals are operatively swung downwardly.

12, In combination, a lamp base having a hollow cord drum projecting upwardly cenffOill its upper side, the xpper r l going ro eccl I O o am, the lUHQL Si Oi a e.

means for said lower si le 01' the l l. The cornbixa i with a llli'll;

i a supix ire into t o a drum Plead said inner The con'ibination wi lacing a downwardly pr flange upon its IFllglll and a core.

it l wer end its center, said .4 paced ap'art openings, or a lamp sup-- 0 wn outer oornon L1, Y s piogecnng upwaiol V flange having a oortin i :1 w 1 o. sposeo e1; eriorly or Ll1 lainp bee and nailing pair of inwardly extendii g mono bers projectii slidably through said spaced apart openings and having their inner ends turned upwardly into sa' open end of the cord drum, a drum head having marginal indents through which said inwardly ex" te -ding Ineinbers operatively more, and means for holding said cruin head against the lower side of said cord drum.

16. In an electric lamp of the character describes, in combination, a base can havi' a pair of laterally spaced apart slots er:- tending vertically "through its upper wall, a fixture supporting stirrup having a pair of side arms projecting up through said slots and an intermediate portion for rigidly con necting the lower end of said side arms together, said intermediate port-ion adapted to seat against the lower side of said upper wall of the base cap, and means on said arms engaging the upper side of the wall for holding said intermediate portion firmly against said lower side.

17. In an electric lamp of the character described, lamp fixture supporting stirrup embodying a pair of laterally spaced apart flat side arms, an intermediate section unitarily connecting the lower ends of said side arms together, and a projection upon one side of each of said arms, said projections spaced a distance upwardly from said intermediate section.

1%. In an electric lamp of the character described, in combination, a base cap having a vertical opening in its center and a vertical opening adjacent its margin, and a reenforcing plate having a central opening registering with said first named opening in the base cap and a marginal opening registering with said second named opening in the base cap. I

19. In an electric lamp of the character described, in combination, a base cap, a drum plate disposed inside the base cap, a central opening in said drum plate disposed in axial alignment with a central opening in the base cap, a draw pin projecting through said openings, the base cap provided with a marginal opening, and means on the upper side of said drum plate projecting through said marginal opening for preventing rotation of said drum plate about its vertical axis relative to the base cap.

20. In an electric lamp of the character described, in combination, a lamp base, a base cap, a spring for yieldingly forcing said base and base cap away from each other, and means for operatively forcing said base and base cap towards each other against the tension of said spring.

21. In an electric lamp of the character described, in combination, a lamp base having a central vertical opening, a base cap having a central opening in axial alignment with said first mentioned opening, a pin projecting through said openings and having its upper end rigidly secured to the base cap, a coil compression spring disposed between said lamp base and base cap for operatively forcing them vertically apart, and means engaging the lower end of said pin for forcing said base and base cap together against the tension of said spring.

22. In an electric lamp of the character described, in combination, a lamp base having an opening extending vertically through its center, a drum plate having an opening extending vertically through its center, a cord drum disposed centrally between said drum plate and lamp base for vertically spacing the outer portions of said members a distance apart, and a pin projecting through said openings.

23. In an electric lamp of the character described, in combination, a lamp base hav ing a drum plate disposed above it, a cord drum disposed centrally between said base and plate for spacing them vertically a distance apart, means for securing said cord 7 drum and drum plate and lamp base together, and a lamp cord on the drum.

24. In an electric lamp of the character described, in combination, a lamp base having a drum plate disposed above it, a cord drum disposed centrally between said lamp base and drum plate for spacing outer portions of said elements vertically a distance apart, said drum rigidly secured to one of said elements, a circuit cord carried by the lamp and windable upon said drum, and means for rotatably securing said lamp base and drum plate together.

25. In an electric lamp of the character described, in combination, a lamp base having a drum plate disposed above it, a cord drum disposed centrally therebetween for vertically spacing said members a distance apart, means for pivotally connecting said lamp base and drum plate together, and a circuit cord carried by the lamp windable on said drum,

26. In an electric lamp of the character described, in combination, a lamp base, a cord drum disposed above the lamp base, a base cap disposed above the cord drum and vertically movable relative thereto, and a circuit cord having a portion extending through said base cap and another portion operatively windable on said drum.

27. In an electric lamp of the character described, in combination, a lamp base, a base cap disposed above said base and having a downwardly projecting annular marginal flange normally seated upon the margin of the base, and a spring disposed between said base and cap for operatively forcing said members vertically apart.

28. In an electric lamp of the character described, in combination, a lamp base, a base cap disposed above said base and having a downwardly extending marginal flange normally seated upon an outer portion of said base, a pivotal connection between said base and base cap, and a compression. spring for operatively forcing said base and base cap vertically away from each other. A

29. In an electric lamp-of the character described, in combination, a lamp base, a base cap disposed above said lamp base and having a downwardly extending marginal flange normally seated upon the rim thereof, a draw pin for pivotally connecting the lamp base and base cap together, and a spiral compression spring encircling said draw pin and operable for yieldingly forcing said marginal flange and rim vertically apart.

30. In an electric lamp of the character described, in combination, a lamp base, a base cap disposed above the lamp base and 

